Is Matt Smith Leaving Doctor Who?

According to The Sun, Matt Smith is making his departure after this year's Christmas special. The BBC has neither confirmed nor denied the rumor, saying, "Sorry folks but even we don't know what's going to happen at Christmas. It's not been written yet! But Matt loves the show and is to start filming the unmissable 50th anniversary, and the new series starting on Easter Saturday."

Would you be sad to see Matt go? Who do you want to see as the 12th Doctor?